http://www.bbc.co.uk/news/magazine-14634600
Another compilation of BS I am afraid re: the building of the Towers and the aftermath.
A few things i noticed, some of the stills during the video do not show the massive amount of steel columns at the core of the building which would house the lifts and services, and did not dwell at all on the outer skin of the building which was integral to the strength of the building whilst allowing open floors.
You can see in the photos how substantial these sections were but nothing is said as to why they were so heavy.
I am shocked at about the 5.30 mark when Leslie E Roberston, the structural engineer on the original World Trade Center project, claims the towers were brought down by fire with the heat deforming the steel etc.
He side steps the issue of the sprinklers 'not working' because of the impact when it is common practice for sprinkler systems to be zoned so that areas can be 'knocked out' without affecting the ability of the sprinklers to keep areas of egress relatively flame-free.
He doesn't even mention the matter of the towers being designed to withstand an impact by a 707 at the time they were built as this was a concern with the proximity of three major airports.